I 'm afraid physic will always be a closed book to me .

恐怕我对物理窍不通。

This is certainly a great discovery in physic .

这可真是医学的一大发现。

Mr. smith gave a talk about modern physic .

史密斯先生作了一次关于现代物理学的演讲。

I unsuccessful in physic exam .

我物理考试又挂了。

Physic is my best subject .

物理是我学得最好的科目。